Incubator-regulator.



No. 892,635. PATENTED JULY '7, 1908. P. M. WIGKSTRUM.

INGUBATOR REGULATOR.

APPLIGATION FILED 0GT.17,1907.

I a Z 2A J9 I Fly 2 UNITED STATES PATENT OFFICE.

PETER M. WIOKSTRUM, or LINCOLN, NEBRASKA.

INCUBATOR-RE GULATOR.

Specification of Letters Patent.

Patented July '7, 1908.

ad'ustment, said mechanism being very sensitive to all changes of temperature.

A still further object is to provide mechanism of this character all parts of which can be readily adjusted so as to cause the actuation of the damper at any desired temperature and at any desired speed.

Another object is to provide such an attachment which may be readily appliedto an incubator and which is simple and durable as well as efficient.

With these and other objects in view the invention consists of certaln'novel features of construction and combinations of parts which will. be hereinafter more fully described and pointedout in the claims. 7

In the accompanying drawings is shown the preferred form of the invention.

In said drawings: Figure 1 is a perspective view of the apparatus a plied to the incubator, one wall 0 the incu ator being removed.

Fig. 2 is an enlarged view partly in section and artl in elevation of the attachment locate wit in the incubator.

The regulator embodying the present improvements is particularly desi ned for use in connection with hot air an hot water heaters in which the cap or damper is. lowered into closed position when it is desired to raise the temperature of the egg chamber and is lifted from the heater when it is desired to cool the egg chamber by permitting the products of combustion to escape from'the heater by a direct path from the lamp. The heater constitutes no art of the resent invention but is one of t 1e various orms used in the manner stated. This heater has been designated by the character A in the accompanying drawings.

Secured to one wall of the incubator B is a bracket 1 having an outstandin farm 2 preferably provided with aknife e ge 3 having extensions 4 adjacent each end which coni stitute abutments or guards.

Loosely mounted on the arm 2 is a loo ed portion 5 of a rock arm 6 which is prefera laly end with a hooked portion 7 while its other end is screw threaded as indicated at 8.so as to be engaged by an adjustable weight 9, the looped portion 5 being located between'the ends and having a depending eye 10 disposed between the loop 5 and the wei ht 9. The damper or cap 11 of the heater is loosely connected to the end 7 of the rock arm.

A rod 12 is ivotally connected to the eye 10 as indicate at 13 and the lower portion of this rod is screw threaded as at 14 and engaged by a nut 15. through one end of an operatin rod 16 which bears upon the nut 15 an extends through a slot 17 formed within the wall of the incubator B. The inner end of said rod 16 is pivotally connected to an arm 18 extendin downward from a bracket 19 which is slida ly mounted on a hanger 20 and adjustably connected to it by means of a set screw 21. This hanger is preferably fastened to the top" of the incubator in any suitable manner and the extremity of the bracket 19 is engaged by athreaded stem 22 secured to and extendin from the center of an annularl corrugated hollow diaphragm 23 formed 0 material designed to readilyexpand'when subjected to heat. Two of these diaphragms are preferably utilized, the lower one 24 being similar to the upper one and the two being connected at their centers in any referred manner as by means ofsolder 25.

he lower dia hragm is disposed above the rod 16 and is esigned when the diaphragms are extended downwardly under the infiuence of heat, to contact with and depress the rod 16.

After the parts have been assembled the sbracket 19 isadjusted u on thehanger 20 to accommodate thereun er the eggs to be hatched. The diaphragms 23 and 24 are then adjusted by means of stud 22 so that more or less expansion of said diaphragms 23 and 24 can be obtained before the lower diahragm comes into contact with rod 16..

he nut 15 is then adjusted onrod '12 so as to hold the rod 16 normally horizontal. Weight 9 can also be adjusted so as to afiord more or less assistance to the dia hragms when raising the cap or damper. ter the The rod 14 extends ormed ofstrong wire and is provided at one parts have been properly adjusted the lamp of the heater can be lighted and the products of combustionwill circulate within the heater and soon raise the temperature of the e g chamber. After this temperature within the egg chamber reaches a certain degree the diaphragms 28 and 24 Will'be ex anded downwardly so as to push against the rod 16 and cause itto ull downward on rod 12. Arm 6 will theref dre be swung upon the knife edge 3 and the cap or damper 11 raised so that the products of combustion can pass directly through the heater without further heating the egg chamber. Thus the temperature within the eg chamber is correspondingly lowered and the parts will return to their.

initial ositions. g

It W1 l be seen that by means of the various adjustments provided the apparatus can .be positively caused,to' operate at any redetermined temperature and by emp oying two hollow dia hragms such as shown the apparatus is rendered very sensitive to changes of temperature.

I What is claimed is:

1. The combination with a heater, a rock arm, and a damper carried thereby; of a hanger, a bracket slidably mounted thereon, a thermostat adjustably connected to and suspended from the bracket,a n oscillating actuating rod pivotally connected to the bracket and extending under and normally out of contact with the thermostat, and an adjustable connection between said rod and the rock arm.

2. The combination with a casing having an aperture therein, a heater, 9. rock arm, and a damper carried by the rock arm of a han er suspended within the casing, a brac et ad ustable longitudinallof the hanger and supported thereby, a t ermostat diaphragm adj ustably connected. to and suspended from the bracket, an actuating rod pivotally connected to the bracket and extending below and spaced from the diaphragm, said rod bein movably mounted within the aperture'in the casing, and anadj ustable. connection between the rod and the rock arm. j

' 3. The combination with a casing having ance rock arm, and a damper carried by the arm; of a hanger suspended Within the. casing, a bracket adjustably mounted uponand supported by the hanger, a thermostat diaphragm, a threaded stem extending from the,

diaphragm and enga ing the bracket, an actuating rod pivotally connected. to the bracket and extending under and normally spaced from the diaphragm, said rod bein I movably mounted within the aperture, an an adjustable connection between the rod and rock arm.

4. The combination with a heater, a rock arm, and a damper carried by the arm; of a hanger, a bracket slidably mounted thereon,

M. WEIL, CARL WEIL.

an aperture therein, a heater, a counterbal- 

